Dr. Weitzman

Dr. Weitzman is the in-show persona of co-creator and producer Matt Weitzman who also voices the character, working as a technician in the CIA labs.

He was originally partnered with co-creator Mike Barker, who left after the show moved to TBS. Both of them, and Dr. Weitzman after going solo, often serve as a plot device to either begin or end a situation that the Smith family often become entangled in.

Dr. Weitzman received an extended background in "Family Time" when he entraps the Smith family in an effort to make them a surrogate family after he is revealed to have had a lonely upbringing.